The Caribbean War was a conflict fought between 1963 and 1968, waged mainly in the Caribbean Sea and the various islands within it. The war is often cited by historians as the true end of European imperialism, with most of the Caribbean territories of European countries stripped away as a result of the war. The war was precipitated by British-Dutch plans to grant independence to their Caribbean territories in a proposed "Caribbean Federation". With local socialist parties likely to win the first elections, the United States intervened, invading the two countries local empires. The war escalated when local socialist powers entered, inciting a bloody proxy war which would continue for five years. Although successful in preventing the establishment of a Caribbean Federation, the United States found its main Caribbean ally, Cuba, split in two by a Communist revolution, a situation which persists to this day.